[3/3] windowscodecs: Implement PngDecoder_Block_GetReaderByIndex.
Vincent Povirk
madewokherd at gmail.com
Wed Mar 25 16:52:04 CDT 2015
-------------- next part --------------
From 0da5f528f060f81a1253e49d6dbd38751bad47de Mon Sep 17 00:00:00 2001
From: Vincent Povirk <vincent at codeweavers.com>
Date: Wed, 25 Mar 2015 14:42:15 -0500
Subject: [PATCH 3/3] windowscodecs: Implement
PngDecoder_Block_GetReaderByIndex.
---
dlls/windowscodecs/pngformat.c | 47 ++++++++++++++++++++++++++++++++++++++++--
1 file changed, 45 insertions(+), 2 deletions(-)
diff --git a/dlls/windowscodecs/pngformat.c b/dlls/windowscodecs/pngformat.c
index 53a2122..679ad3d 100644
--- a/dlls/windowscodecs/pngformat.c
+++ b/dlls/windowscodecs/pngformat.c
@@ -1062,8 +1062,51 @@ static HRESULT WINAPI PngDecoder_Block_GetCount(IWICMetadataBlockReader *iface,
static HRESULT WINAPI PngDecoder_Block_GetReaderByIndex(IWICMetadataBlockReader *iface,
UINT nIndex, IWICMetadataReader **ppIMetadataReader)
{
- FIXME("%p,%d,%p\n", iface, nIndex, ppIMetadataReader);
- return E_NOTIMPL;
+ PngDecoder *This = impl_from_IWICMetadataBlockReader(iface);
+ HRESULT hr;
+ IWICComponentFactory* factory;
+ IWICStream* stream;
+
+ TRACE("%p,%d,%p\n", iface, nIndex, ppIMetadataReader);
+
+ if (nIndex >= This->metadata_count || !ppIMetadataReader)
+ return E_INVALIDARG;
+
+ if (!This->metadata_blocks[nIndex].reader)
+ {
+ hr = StreamImpl_Create(&stream);
+
+ if (SUCCEEDED(hr))
+ {
+ hr = IWICStream_InitializeFromIStreamRegion(stream, This->stream,
+ This->metadata_blocks[nIndex].ofs, This->metadata_blocks[nIndex].len);
+
+ if (SUCCEEDED(hr))
+ hr = ComponentFactory_CreateInstance(&IID_IWICComponentFactory, (void**)&factory);
+
+ if (SUCCEEDED(hr))
+ {
+ hr = IWICComponentFactory_CreateMetadataReaderFromContainer(factory,
+ &GUID_ContainerFormatPng, NULL, WICMetadataCreationAllowUnknown,
+ (IStream*)stream, &This->metadata_blocks[nIndex].reader);
+
+ IWICComponentFactory_Release(factory);
+ }
+
+ IWICStream_Release(stream);
+ }
+
+ if (FAILED(hr))
+ {
+ *ppIMetadataReader = NULL;
+ return hr;
+ }
+ }
+
+ *ppIMetadataReader = This->metadata_blocks[nIndex].reader;
+ IWICMetadataReader_AddRef(*ppIMetadataReader);
+
+ return S_OK;
}
static HRESULT WINAPI PngDecoder_Block_GetEnumerator(IWICMetadataBlockReader *iface,
--
2.1.0
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